

Technically that would be a defense if the god in question was actually as powerful as they say they are or that they are nessisarily good. There is always a possibility that Gods exist but are not on the hook to tell the truth and their goals do not align with humans.
A lying god telling the kids they have magic powers well beyond them and proving it like an uncle playing a dumb trick on the three year olds at a family reunion is a possibility. Maybe God exists and is just kind of an ass?
But there are a lot of things that exist that aren’t exactly friendly. People often hinge their belief or disbelief in any divinity singularly on the bible. They consider proof of God existing is based on whether all the claims made in an old book are true - not that it is a fallible piece. It either has to be all true or all false which is not how any scientific text more than a decade out of date has proven.
Not saying that means anyone should start praying. The God as listed in the Bible given their behaviour does not seem either omniscient, omnipotent or benevolent but those ideals have shaped a lot of the discussion about whether something classifies as a “true” God or not. A lot of thought and debate goes towards squaring that circle. Sometimes the easiest answer is that lies exist. The presense of other gods are noted in the bible. Maybe that one was just a super powered Narcissist.